The propagation of 300 femtosecond optical pulses in Silicon-on Insulator waveguides has been studied by means of a pump-probe set-up. The ultrafast pulses allowed the observation of large Kerr-induced red and blue shifts (9nm and 15nm, respectively) of the probe signal depending on the delay between pump (1554nm) and probe (1683nm) pulses. A numerical… (More)
Mitochondria are sites of cellular energy production but may also influence life and death decisions by initiating or inhibiting cell death. Mitochondrial depolarization and the subsequent release of pro-apoptotic factors have been suggested to be required for the activation of a cell death program in some forms of neuronal apoptosis. We induced apoptosis… (More)
dimensional siloxane resist for the formation of nano-patterns with minimum linewideth fluctuations, " J. of a hydrogen silsesquioxane resist with reduced linewidth fluctuations, " Microelectron. Sub-10 nm linewidth and overlay performance achieved with a fine-tuned EBPG-5000 TFE electron-beam lithography system, " Jpn. " Hydrogen silsesquioxane/novolak… (More)
Development of programmable photonic devices for future flexible optical networks is ongoing. To this end, an innovative, multi-format QAM transmitter design is presented. It comprises a segmented-electrode InP IQ-MZM to be fabricated in InP, which can be directly driven by low-power CMOS logic. Arbitrary optical QAM format generation is made possible using… (More)
Microring based silicon depletion modulators with high extinction ratios (>25dB) are used for high frequency modulation and as resonant photodetectors at 1340nm (O-band). Photocurrent and power enhancement are investigated for mircorings with different Q-factors.
We experimentally investigate the dispersion relation of silicon-on-insulator waveguides in the 1.5 microm wavelength range by using a technique based on far-field Fourier-space imaging. The phase information of the propagating modes is transferred into the far field either by linear probe gratings positioned 1 microm away from the waveguide core or by… (More)
Silicon-organic hybrid (SOH) integration combines silicon photonic devices with electro-optic organic cladding materials. We demonstrate that SOH modulators can be used to generate advanced modulation formats with high symbol rates at low operating voltages and low energy consumption. Moreover, we show that the SOH approach can be extended to plasmonic… (More)
We demonstrate a silicon-based 16QAM modulator with a record-low drive voltage of 0.6V<sub>pp</sub> and an energy consumption of 19fJ/bit. The device employs silicon slot waveguides with electro-optic organic cladding and enables data transmission at 112Gbit/s.
In this paper, a model for the analysis and design of a reflective Arrayed Waveguide Grating is presented. The device consists of one half of a regular AWG where each arm waveguide in the array is terminated with a phase shifter and a Sagnac loop reflector. By individually adjusting the phase shifter and Sagnac reflectivity in each arm, additional… (More)